7х(2 х х+1)-2 х(2 х х+1)=9 999 999+9 999 999+9 999 - вопрос №7212219999999999999999999998486585 от kamilachelny 10.01.2020 00:36

Question

Математика: 7х(2 х х+1)-2 х(2 х х+1)=9 999 999+9 999 999+9 999 999+8

kamilachelny · Answer

7 ·(2·х+1) - 2 ·(2·х+1)=9 999 999 + 9 999 999 + 9 999 999 + 8 7 ·(2х+1) - 2 ·(2х+1)= 3·9 999 999 +85·(2х+1) =3000000510х+5 =3000000510х =30000005 - 510х =30000000х=3000000...